Finding the Fourth Proportional to 225,756.64, 311,540.61 and 123,782.99
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Solution
The fourth proportional to 225,756.64, 311,540.61 and 123,782.99 is: 170,818.57
Step by Step Solution
- Step 1: Write the proportion equation
225,756.64 : 311,540.61 = 123,782.99 : x - Step 2: Convert to fraction form
225,756.64/311,540.61 = 123,782.99/x - Step 3: Cross multiply
225,756.64x = 311,540.61 × 123,782.99 - Step 4: Simplify right side
225,756.64x = 38,563,426,074.29 - Step 5: Solve for x
x = 38,563,426,074.29/225,756.64 - Step 6: Final answer
x = 170,818.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.